public class Student {
    // 私有属性
    private String id;
    private String name;
    private String gender;
    private int age;

    // 无参构造方法
    public Student() {
    }

    // 带参构造方法，接收学号、姓名、年龄
    public Student(String id, String name, String gender, int age) {
        this.id = id;
        this.name = name;
        this.gender = gender;
        this.age = age;
    }

    // getter和setter方法
    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    // 展示学生信息
    public void showInfo() {
        System.out.println("===== 学生信息 =====");
        System.out.println("学号: " + id);
        System.out.println("姓名: " + name);
        System.out.println("性别: " + gender);
        System.out.println("年龄: " + age);
        System.out.println("===================");
    }
}
